| Taking backsights is a way of detecting errors and blunders in reading instruments. |
| Our team consisted of Ralph as sketcher, Pat Bingham keeping book, Edgard Bertaut taking foresights with me on point, setting stations and doing backsights. |
| This process is an example of one done without using backsights, still fairly common. |
| If your party is recording corrected backsights be sure to read the upper scale if you are shooting a backsight. |
| A number of intermediate instrument set-ups are selected, so that sighting distance for backsights and foresights are approximately equal. |
